17 Dec
2003
17 Dec
'03
11:17 p.m.
Derek Atkins says:
brute force search for one quite practical -- especially since it only need be done once.
actually, it needs to be done once per session key (i.e., when you change the session key, you need to re-issue a LEAF)
However, it can be done in advance, and you can conceivably reuse forged LEAFs. I've come up with what I believe to be a pretty good algorithm to prevent this problem. I would like to patent it so that I can then charge exhorbitant sums of manufacturers should the technique be incorporated in a future EES design. Anyone know where I can find a cheap patent attorney? Perry